/*
* Copyright (c) 2009-2011 Hazard (hazard_x@gmx.net / twitter.com/HazardX)
* 
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* 
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/

#pragma once
#pragma managed

namespace GTA {

	CLASS_ATTRIBUTES
	private ref class KeyWatchDog sealed {

	private:
		array<bool>^ keystate;
		BYTE* ckeystate;
		bool bShift;
		bool bCtrl;
		bool bAlt;
		WinForms::Keys pModifier;

		bool cIsKeyPressed(WinForms::Keys key) {
			int num = (int)key;
			if ((num < 0) || (num > 255)) return false;
			return ((ckeystate[num] & 0x80) != 0);
		}

		void CheckKeyAsync(WinForms::Keys Key);

	protected:

		virtual void OnKeyDown(KeyEventArgs^ e);
		virtual void OnKeyUp(KeyEventArgs^ e);

	public:
		event KeyEventHandler^ KeyDown;
		event KeyEventHandler^ KeyUp;

		KeyWatchDog();
		~KeyWatchDog();
		
		bool isKeyPressed(WinForms::Keys key) {
			int num = (int)key;
			if ((num < 0) || (num > 255)) return false;
			return keystate[num];
		}


		property bool Shift {
			bool get() {
				return bShift;
			}
		}
		property bool Ctrl {
			bool get() {
				return bCtrl;
			}
		}
		property bool Alt {
			bool get() {
				return bAlt;
			}
		}
		property WinForms::Keys Modifier {
			WinForms::Keys get() {
				return pModifier;
			}
		}

		void Check();

	};

}